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cc65/libsrc/apple2enh/chline.s

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;
; Ullrich von Bassewitz, 08.08.1998
;
; void chlinexy (unsigned char x, unsigned char y, unsigned char length);
; void chline (unsigned char length);
;
.export _chlinexy, _chline, chlinedirect
.import popa, _gotoxy, cputdirect
.importzp tmp1
.include "../apple2/apple2.inc"
_chlinexy:
pha ; Save the length
jsr popa ; Get y
jsr _gotoxy ; Call this one, will pop params
pla ; Restore the length and run into _chline
_chline:
ldx #'S' ; MouseText character
ldy INVFLG
cpy #$FF ; Normal character display mode?
beq chlinedirect
ldx #'-' | $80 ; Horizontal line, screen code
chlinedirect:
cmp #$00 ; Is the length zero?
beq L9 ; Jump if done
sta tmp1
L1: txa ; Screen code
jsr cputdirect ; Direct output
dec tmp1
bne L1
L9: rts